CN102165310A - Hydrogen sensor with air access - Google Patents
Hydrogen sensor with air access Download PDFInfo
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- CN102165310A CN102165310A CN2009801393749A CN200980139374A CN102165310A CN 102165310 A CN102165310 A CN 102165310A CN 2009801393749 A CN2009801393749 A CN 2009801393749A CN 200980139374 A CN200980139374 A CN 200980139374A CN 102165310 A CN102165310 A CN 102165310A
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- sensor
- hydrogen
- liquid
- headspace
- film
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2835—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel
- G01N33/2841—Oils, i.e. hydrocarbon liquids specific substances contained in the oil or fuel gas in oil, e.g. hydrogen in insulating oil
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—Specially adapted to detect a particular component
- G01N33/005—Specially adapted to detect a particular component for H2
Abstract
The invention is directed at a method of sensing hydrogen gas in a liquid comprising: providing a measuring device comprising a hydrogen sensing chamber and a palladium hydrogen sensor mounted in contact with said chamber, positioning a hydrogen permeable membrane between the liquid and the hydrogen sensor and creating a headspace, selectively providing air to the sensor headspace, thereby bringing air into contact with said palladium sensor to refresh the palladium, after the palladium sensor is refreshed shutting off air flow to the sensor headspace, bringing liquid into said chamber, allowing hydrogen to pass through the membrane and reach equilibrium, and reading the hydrogen concentration.
Description
Technical field
The present invention relates to the measurement of hydrogen in the liquid.Specifically, relate to the measurement of hydrogen in the oil.
Background technology
Measure that hydrogen is significant in the oil of electrical transformer, because hydrogen can show that overheated and/or discharge has caused oily puncture in the transformer in the oil.The transformer oil cooling transformer also works the dielectric effect of doing.Along with transformer oil ageing, the dielectric effect of oil becomes worse and worse.The increase of dissolved hydrogen amount is a kind of indication that transformer is about to inefficacy in the transformer oil.
In the oil of the long-time running engine that in such as generating and powered ship, uses, also need to determine the concentration of hydrogen.When changing cooking oil, monitor that the level of hydrogen in the oil also is useful for determining when.The hydrogen richness of oil also is significant in the monitor hydrogen power engine.
For high-power transformer, be provided with hydrogen gas sensor, their using gases chromatographys or light-sound wave spectrometry is determined amounts of hydrogen in the transformer oil.So device is very expensive, and for smaller transformer, such cost is proved to be irrational.If can provide low cost method to do this thing, then just there are many older, small-sized transformers can obtain monitoring.
The low-cost gas monitor Hydran that General Electric Co. Limited (General Electric Company) makes
TMM2 comes into operation.Yet this gas monitor only detects inflammable gas, use a formula to estimate gas, normally as hydrogen what are arranged then, and how much other gas has.
Delivered article " Overview of Online Oil Monitoring Technologies " (in-service monitoring technology summary of oil) in the 4th the Weidmann-ACTI technology annual meeting that Tim Cargol holds San Antonio in 2005, this article has proposed the discussion of relevant oil gas measuring technique, comprises the measurement of hydrogen.
Publication " Gases and Technology " July/August, in article " PalladiumNanoparticle Hydrogen Sensor " the 18-21 page or leaf in 2006 the palladium hydrogen sensor is disclosed.The palladium sensor also is disclosed in the U.S. Patent Publication: the people's such as US2007/0068493, Ng of people's such as Visel US 2007/0125153, Pavlovsky US 2004/0261500.
Need the low cost method of hydrogen content in a kind of definite oil, such as the in-engine oil of transformer and long-time running, such as other liquid of organic cooling liquid, for example, ethylene glycol, and employed cutting coolant liquid in the cooling of metal cutting device.
Summary of the invention
The present invention relates to the method for hydrogen in the tracer liquid, it comprises: measurement mechanism is provided, and this device comprises the hydrogen test chamber and is mounted to the palladium hydrogen sensor that contacts with described chamber; The permeable film of hydrogen is placed between liquid and the hydrogen sensor; Between sensor and film, form headspace; Headspace to sensor provides air selectively, thus, air is contacted with described palladium sensor and palladium is restored, after the palladium sensor recovers, close the air-flow that leads to the sensor headspace, liquid is entered in the described chamber, allow hydrogen to reach balance by film, and the concentration that from sensor, reads hydrogen.
Description of drawings
Fig. 1 is a synoptic diagram of measuring the equipment of hydrogen richness in being connected to the test container of large-scale liquid container.
Fig. 2-the 6th, the stereographic map of hydrogen measurement device.
Fig. 7-the 9th, the vertical view of hydrogen measurement mechanism of the present invention and side view have shown cutting line A-A, B-B, C-C, D-D and E-E.
Figure 10 is the view on Fig. 8 cutting line A-A.
Figure 11 is the view on Fig. 7 cutting line B-B.
Figure 12 is the view on Fig. 7 cutting line C-C.
Figure 13 is the view on Fig. 9 cutting line D-D.
Figure 14 is the view on Fig. 7 cutting line E-E.
Figure 15 is the enlarged drawing of Figure 14 cutting plane, is shown specifically hydrogen sensor.
Figure 16,17 and 18 is views of another embodiment of the present invention, and cutting line illustrates in the drawings.
Figure 19 is the cut-open view on Figure 17 cutting line A-A.
Figure 20 is the cut-open view on Figure 18 cutting line B-B.
Figure 21 is the cut-open view on Figure 16 cutting line C-C.
Figure 22 is the cut-open view on Figure 18 cutting line D-D.
Figure 23 is the cut-open view on Figure 16 cutting line E-E.
Figure 24 is the cut-open view that hydrogen is measured vortex generator in the chamber.
Figure 25 is the synoptic diagram of apparatus of the present invention and method, and the mobile of oil and the air device by measuring hydrogen, moisture and temperature is shown.
Embodiment
The invention provides many advantages that are better than one type of prior art syringe and method.The present invention is little lower with cost than other hydrogen pick-up unit volume.This device accurately also can easily renovate existing
ContainerOr on the engine.The system that this device provides point-device hydrogen sensor and keeps the hydrogen sensor precision.This device provides the method for moving liquid, and this method moves such as the such liquid of oil, to obtain accurate reading on sensor or around it.This device allows more emat sensor, and need not provides opening for oil leaves container.Well-known and the instrumentation controller that can buy of sensor utilization of the present invention.Above-mentioned advantage with other will be understood from following description.
Fig. 1 illustrates hydrogen measuring equipment 10.This equipment comprises hydrogen sensor 12, the permeable film 14 of hydrogen, controller 16 and oily test container 18.In operation, liquid is generally oil 22 and enters in the test container 18 from container 24.Liquid flow is subjected to pump 26 controls.Flowing of oil controlled by following valve also: allow oil enter valve 28 in the test cell 18, and allow oil flow out and return by pipeline 35 valve 32 and 34 of container 24 from sample receiver 18.Oil can flow through film 14 usually before isolated container 18, so that obtain to be loaded in the effective common sample in the test container 18 from bulk container 22.Film 14 by forming such as the material that can see through the PTFE fabric of hydrogen, allows hydrogen and other gas to enter in the headspace 17 by film, and does not allow oil pass through usually.Hydrogen sensor 12 is installed in the shell 15, and shell 15 usefulness screw threads 44 are screwed in the side 42 of test container 18.Before the hydrogen richness in test fluid flow, the hydrogen sensor 12 with palladium end 13 stands air or other gas flow that contains aerobic in the headspace 17, and the gas that air or other contain aerobic enters by valve 36 and pass through valve 38 outflows.Gas flow is implemented the sufficiently long time so that palladium 13 restores, and purifies the residual any hydrogen of previous sample, can carry out accurate hydrogen test like this.After time, between 1 and 2 minute, palladium obtains newborn usually at the process long enough, and valve 36 and 38 cuts out, and forms airtight gas headspace 17 around sensor 12.By shut-off valve 38 and 36 and by after isolated, make gas headspace 17 reach balance, the reading of hydrogen is obtained by sensor 12, and handles to give fuel-displaced middle hydrogen richness with controller 16 at sensor.Can obtain the time of hydrogen reading for reaching balance, usually between 2 and 6 hours.Although it is to supply by the pipeline in the wall 42 of test container 43 that Fig. 1 indicates air, air intake also can be arranged in the shell 15 of sensor 12.In palladium hydrogen sensor 12, must elder generation enter in the chamber 17 to demarcate this sensor by hydrogen and the air that valve 36 and outlet valve 38 inject known quantities.
In Fig. 2,3,4,5 and 6, the stereographic map according to measurement mechanism 50 of the present invention is shown.This device comprises manifold block 49, oil pump 52 and pneumatic pump 54.This device 50 is provided with the hole 56 and 58 that oil advances and oil goes out, correspondingly in Fig. 3 as seen.Visible air flows out non-return valve 62 among Fig. 3 and 4.Measurement mechanism is provided with chock plug 64, and the hole that is drilled with oily passage is blocked.Fuel level sensor 66 is suitable for detecting the oil level in the Humidity Detection compartment.Pump 52 will not cut out after sensor 66 detects oil soon.Utilize tie point 68 and 69 and other mounting points (not shown), measurement mechanism is installed on the plate 53.
Fig. 7,8 and 9 is vertical view and two side views of measurement mechanism 50 of the present invention.Fig. 7 illustrates profile line B-B, C-C and E-E.Fig. 8 illustrates profile line A-A.Fig. 9 illustrates profile line D-D.
Figure 10 illustrates the measurement mechanism shown in the section A-A of Fig. 8.In Figure 10, the non-return valve 74 that detection chambers of hydrogen shown in the figure 104 and control oil flow out from chamber.Well heater 76 provides heat, so that measurement mechanism keeps stable temperature in measuring process, like this, the result that different time records can compare, and can guarantee the best-of-breed functionality of hydrogen probe.Measurement mechanism also has Humidity Detection compartment 78, and this compartment is provided with oily shut-off valve 82 and fuel level sensor 84.
Figure 11 is the view on Fig. 7 profile line B-B, and this illustrates fuel-displaced admission passage 92 and flow pass 94.The terminals 66 that are used for fuel level sensor 84 also are shown among the figure.
Figure 12 illustrates along the cut-open view of the device 50 of Fig. 7 profile line C-C intercepting.Humidity sensor compartment 78 shows fuel level sensor 66.Figure 13 is the view on Fig. 9 profile line D-D, in Figure 13, the Humidity Detection chamber 78 that has humidity sensor 88 and oil level detector 66 is shown.Hygrosensor 88 is surveyed the moisture that exists in the oil of transformer or other device (not shown), and hygrosensor 88 also contains the temperature sensor that is useful on temperature control and the calculating of number percent humidity.
In Figure 14, show the air duct that the palladium that is used to make hydrogen sensor restores by the profile line B-B of Fig. 7 intercepting.Air duct 102 is by valve 96 and 98 controls, and it allows air to flow in the air duct 102 and contact with palladium, and palladium is regenerated so that the accurate measurement of hydrogen.Hydrogen measurement mechanism 95 contacts with oily hydrogen detection chambers 104.Demarcate injection port 93 and allow the known gas sample that contains hydrogen to inject, and contact,, also allow the gas bleeding sample to make external analysis so that determine and the accurate operation of calibration sensor with the palladium of hydrogen sensor.
Figure 15 is the enlarged drawing of Figure 14 section, and hydrogen sensor 95 at length is shown.Hydrogen sensor 95 extends in the hydrogen detection chambers 104.Sensor 95 is provided with sealing ring 106 and 108, so that sensor is isolated with oil and air.Sensor 95 is provided with film 112, and film is generally Teflon, and it is a micropore, allows to pass through from the hydrogen in the oil in the hydrogen detection chambers 104, contacts with the palladium 114 of sensor, and does not allow oil to pass through.Hydrogen sensor is provided with electric wire 115, makes sensor be connected to the controller (not shown).
As shown in Fig. 2-15, in sensor operation of the present invention, pneumatic pump 54 makes air pass through air intake 96 and flows out from air out 98.Flow through passage 92 by extracting oil, pump 52 makes the oil circulation, passes through passage 92 from the source such as the transformer (not shown), fills hydrogen detection chambers 104 by admission valve 82 then, make oily filling containers 102 also flow out continuously, so that turn back to oil sources by outlet 74.By closing air intake valve 96 and air outlet valve 98, make the air-flow of self-pumping 54 to interrupt.The palladium sensor was stablized about 1 minute, and the mobile of air stops then.Before beginning operation, stop to flow to the air-flow of inlet 96, inject the hydrogen test gas by demarcating port 93.Close outlet 98, confirm that then hydrogen sensor 94 reaches balance.Then, by allowing air continue to pass through the palladium sensor about 1 minute once more, make hydrogen sensor regeneration (recovery).Stop air-flow, close air intake valve 96 and air outlet valve 98, close around the headspace chamber 113 of the palladium 114 of sensor 95.Stop oil flow by fuel tap 74 and 82, so chamber 102 is by isolated by chamber 102.Permission is enough to make hydrogen to reach the balance time section by film 112 and in headspace 113 through one, and this time period is about 4 hours usually, obtains reading by hydrogen sensor 95 then.Should be noted that, only after moving several years, just need sensor is demarcated usually.The advantage of sensing system of the present invention is, green oil is pumped in the hydrogen detection chambers 104 termly, thus, if do not compare, provide accurate more reading by moving the situation that obtains restoring from transformer or other oil sources with the oil of the film of contiguous semi-transparent mistake.
Reading from temperature sensor and/or humidity sensor 88 obtain can obtain when hydrogen is measured, or obtain individually.If sampling valve is arranged on the measurement mechanism, then can carry out sampling by the oil of sampling valve.Improve if hydrogen is measured from previous level, further test is done in then special hope.As mentioned above, before each time reading, the green oil sample is pumped in the chamber.
The hydrogen sensor that contains palladium all is known in the industry with the controller that is used for sensor.So sensor is disclosed in the following U.S. Patent Application Publication: people's such as Visel US 2007/0125153 and the US 2007/0240491 of Pavlovsky, this paper is to introduce referring to mode.Publication " Gases andTechnology " July/August, published the article that I.Pavlovsky showed " PalladiumNanoparticle Hydrogen Sensor " in 2006, this article also contains the description relevant for the method and apparatus of hydrogen sensor and their uses.Palladium nanoparticles used in the preferred sensor of the present invention is inherently to the hydrogen sensitivity, can not produce false alarm based on the sensor of palladium nanoparticles net when having other gas.Desirable especially when this makes sensor in being used for apparatus of the present invention, because when detecting hydrogen, might there be other gas.Other hydrogen sensor and their controller are disclosed in the following U.S. Patent application: people's such as the US 2007/0068493 of Pavlovsky and Pavlovsky US 2007/0240491, this paper is to introduce referring to mode.The pony pump that is used for the empty G﹠O of a small amount of that hydrogen sensor of the present invention is required is well-known.Usually these pumps are membrane pumps, and they are specially adapted to accurately handle a spot of liquid or gas.Temperature sensor and humidity sensor in industry also can easily obtain.
Used valve can be any suitable type in the measurement mechanism of the present invention.They can be simple non-return valve or solenoid valve.Have found that, be to use solenoid valve first-selectedly, especially in air-flow, because non-return valve can sufficiently not seal up hydrogen to measuring.
Figure 16-24 illustrates the preferred embodiments of the present invention.This embodiment is different from Fig. 1-15 device, difference is at least, this device contains solenoid valve and be used for the chamber of oil in the hydrogen measuring process, chamber is included in the device that forms eddy current in the chamber, mix better with the oil that has existed so that enter the interior oil of chamber, and scan the parts of the little infiltration in the chamber.The operation of this device is identical with the device of Fig. 2-15.Figure 16,17 and 18 is the views that have the device of cutting line.The same part of this embodiment is marked with the identical Reference numeral of part with previous embodiment.
In the view of Figure 16, oil pump 52 and pneumatic pump 54 are all as seen.Oil sampling Rule (1uer) 91 and air sampling Rule 93 also are shown among the figure.The solenoid valve 144 that is used to enter the oil of sensor also illustrates in the drawings.Figure 17 illustrates the position of hydrogen sensor 95 and fuel level sensor 88.In Figure 18, well heater 91 and 93 is shown as in air strainer 171.Being used for air enters the solenoid valve 168 in the sensor and is used for the solenoid valve 166 that air flows out sensor and all be presented at Figure 18.
Figure 19 is the cut-open view on Figure 17 cutting line A-A, in Figure 19, shows oil pump 52 and pneumatic pump 54.In addition, there is shown entrance and exit solenoid 144 and 146, they are respectively applied for and make oil enter hydrogen measurement chamber 94 and be used in the chamber 78 of moisture and temperature detection.Whirlpool generation member is shown as 142.Figure 20 is the cut-open view on Figure 18 cutting line B-B, in Figure 20, shows air Rule 93, oily sample Rule 91 and fuel level sensor 66.In Figure 19 and 21, show fuel tank 78 and solenoid valve 144.The admission passage of oil is shown as 92.Figure 22 is the cut-open view on Figure 18 cutting line D-D, in Figure 22, shows fuel level sensor 84 and temperature and humidity sensor 88.Also show well heater 76 and 77.Figure 23 is the cut-open view on Figure 16 cutting line E-E, in Figure 23, shows air Rule 93 and hydrogen pick-up unit 94.Also show well heater 76 and 77.The pin that is used for eddy generator is a Reference numeral 142.
In Figure 24, the eddy generator 142 that is used for oil-in chamber 152 is shown, in the hydrogen testing process, the oil that is used for the hydrogen detection is maintained in the oil-in chamber 152.Permeable film 94 separates oil-in chamber 148 and hydrogen detection chambers 104.When oil entered chamber 152 by admission passage 156, oil flow through the spiral slot 158 of static eddy generator 142.Therefore, oil is towards permeable member 94, and eddy current has been removed and may be deposited in and can clean permeable member 94 thus so that transmit hydrogen better through the bubble on the member or any fragment.Also guarantee the continuous motion of oil, not low round-robin retention areas by chamber.Eddy generator 142 has the groove as drill bit.Have found that preferable groove arrangement is the structure of the high machine work drill bit that flows.The oil flow of flowing out from chamber 54 takes place by oily flow pass 162, controlled by the solenoid valve (not shown).
Figure 25 is used in particular for the inventive method of Figure 16-24 embodiment sensor and the synoptic diagram of equipment.As shown in the figure, oil flow upwards by oil pump, flows into oil strainer downwards and enters in the fuel tank from the oil supply of transformer.In fuel tank, detect the moisture and the temperature of oil.In addition, can sample to oil.Solenoid is being controlled the oil flow in the eddy generator that flows out chamber and flow into hydrogen sensor.Oil flow solenoid valve 2 is being controlled the oil flow of flowing out hydrogen sensor, so that turn back to transformer.Pneumatic pump supply air flows into the hydrogen surveyed area by solenoid valve 3, and flows out by air solenoid valve 4, with the palladium in the purified hydrogen sensor.Air by the hydrogen sensor head flows in the atmosphere by air solenoid valve 4.Measure in the about 4 hours required processes at hydrogen, close air and solenoid.
Obviously, those skilled in the art can understand that the present invention can have various variants.For example, not to utilize air to restore palladium, but can use oxygen.In addition, can provide air strainer to the air that enters hydrogen sensor as everybody knows.The sensor of other type also can add test container to, yet, if this unit little, cost is low with compactness, makes that the part that adds no longer is necessary.Unit of the present invention is normally little does not comprise controller unit, and its volume tolerance is less than 100 cubic inches.
Claims (28)
1. the method for hydrogen in the tracer liquid, it comprises:
Measurement mechanism is provided, and this device comprises the hydrogen detection chambers and is mounted to the palladium hydrogen sensor that contacts with described chamber; Be placed on the permeable film of hydrogen between liquid and the hydrogen sensor and form headspace; Headspace to sensor provides air selectively, thus, air is contacted with described palladium sensor and palladium is restored, after the palladium sensor recovers, close the air-flow that leads to the sensor headspace, liquid is entered in the described chamber, allow hydrogen to reach balance by film, and the concentration that reads hydrogen.
2. the method for claim 1 is characterized in that, also is included in hydrogen and measures in the headspace of before known amounts of hydrogen being sent between film and the palladium sensor, so that hydrogen sensor is demarcated.
3. the method for claim 1 is characterized in that, uses solenoid valve that air is entered in the headspace, and removes air and hydrogen test gas from headspace.
4. the method for claim 1 is characterized in that, described liquid comprises transformer oil.
5. the method for claim 1 is characterized in that, providing film to comprise provides the film of being made by tetrafluoroethene.
6. the method for claim 1 is characterized in that, described measurement mechanism also provides the humidity sensor that is positioned on the measurement mechanism, is used for measuring the moisture of liquid.
7. the method for claim 1 is characterized in that, comprises the liquid that circulation is to be tested, and by hydrogen detection chambers and Humidity Detection compartment, then liquid is turned back to bigger container from bigger container.
8. the method for claim 1 is characterized in that, comprises providing having the Humidity Detection compartment that extends into the humidity sensor in the liquid.
9. the method for claim 1 is characterized in that, described liquid comprises oil.
10. the method for claim 1 is characterized in that, liquid is entered be to use the eddy generator that forms eddy current on film in the chamber.
11. the method for claim 1 is characterized in that, in the hydrogen measuring process, with solenoid valve liquid flow is stopped.
12. the equipment of hydrogen in the measurement liquid, comprise: measurement mechanism, be installed in palladium hydrogen sensor on the described device, make fluid separation applications in described hydrogen sensor and the hydrogen detection chambers that forms headspace film, gas circulation is restored the device of palladium to described hydrogen sensor, and the device of closing the gas circulation of leading to hydrogen sensor.
13. the device of measurement hydrogen as claimed in claim 12 is characterized in that, also comprises the gas that contains hydrogen is entered in the headspace between described film and the described hydrogen sensor, to demarcate described sensor.
14. the device of measurement hydrogen as claimed in claim 12 is characterized in that, described measurement mechanism also comprises the humidity sensor that is installed in the Humidity Detection compartment.
15. the device of measurement hydrogen as claimed in claim 14 is characterized in that, also comprises the controller that is used for hydrogen sensor.
16. the device of measurement hydrogen as claimed in claim 13, it is characterized in that, also comprise the membrane pump that makes air enter described headspace, be used to control air and enter non-return valve or solenoid valve in the described headspace, be used to control non-return valve or the solenoid valve that air flows out from described headspace.
17. the device of measurement hydrogen as claimed in claim 12 is characterized in that, described measurement mechanism is provided with the device of circulating fluid, is recycled to hydrogen sensor from bigger container to contact, and liquid is turned back to bigger container.
18. device as claimed in claim 17 is characterized in that, the device that liquid is recycled to from bigger container contact with described sensor forms the eddy generator of eddy current at film.
19. device as claimed in claim 12 is characterized in that, described measurement mechanism also comprises the Humidity Detection compartment.
20. device as claimed in claim 19 is characterized in that, described Humidity Detection compartment is provided with humidity sensor and temperature sensor.
21. sensor, comprise: palladium hydrogen sensor, the film that contacts with liquid, described film and described sensor are separated forming headspace, to make gas round-robin device in headspace, and moving liquid contacts the device of the known amount of liquid that sealing then contacts with hydrogen sensor with film.
22. sensor as claimed in claim 21 is characterized in that, also comprises the pump that is used for gas circulation and the moving liquid pump by described detection chambers.
23. sensor as claimed in claim 21 is characterized in that, also comprises the solenoid valve of closing the air-flow that flows to described sensor.
24. sensor as claimed in claim 21 is characterized in that, described film comprises the tetrafluoroethene of gas permeable.
25. sensor as claimed in claim 21 is characterized in that, also comprises the microcontroller that is used for the palladium sensor.
26. sensor as claimed in claim 25 is characterized in that, described measurement mechanism also comprises at least one well heater.
27. sensor as claimed in claim 21 is characterized in that, moving liquid comprises eddy generator with the device that described film contacts.
28. sensor as claimed in claim 21 is characterized in that, the device of the liquid that sealing contacts with hydrogen sensor comprises solenoid valve.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/241,432 | 2008-09-30 | ||
| US12/241,432 US8028561B2 (en) | 2008-09-30 | 2008-09-30 | Hydrogen sensor with air access |
| PCT/US2009/054151 WO2010039345A1 (en) | 2008-09-30 | 2009-08-18 | Hydrogen sensor with air access |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102165310A true CN102165310A (en) | 2011-08-24 |
Family
ID=42055973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801393749A Pending CN102165310A (en) | 2008-09-30 | 2009-08-18 | Hydrogen sensor with air access |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8028561B2 (en) |
| EP (1) | EP2331948A4 (en) |
| JP (1) | JP2012504240A (en) |
| CN (1) | CN102165310A (en) |
| AU (1) | AU2009300243A1 (en) |
| CA (1) | CA2738869A1 (en) |
| MX (1) | MX2011003355A (en) |
| WO (1) | WO2010039345A1 (en) |
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| CN106502286A (en) * | 2016-12-01 | 2017-03-15 | 深圳市深安旭传感技术有限公司 | A kind of hydrogen gas sensor with humidity regulation unit |
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| US8196448B2 (en) * | 2010-01-20 | 2012-06-12 | GM Global Technology Operations LLC | Hydrogen sensor assembly |
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- 2009-08-18 MX MX2011003355A patent/MX2011003355A/en active IP Right Grant
- 2009-08-18 AU AU2009300243A patent/AU2009300243A1/en not_active Abandoned
- 2009-08-18 CN CN2009801393749A patent/CN102165310A/en active Pending
- 2009-08-18 EP EP09818171.2A patent/EP2331948A4/en not_active Withdrawn
- 2009-08-18 JP JP2011529048A patent/JP2012504240A/en active Pending
- 2009-08-18 WO PCT/US2009/054151 patent/WO2010039345A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106053719A (en) * | 2015-04-02 | 2016-10-26 | 通用电气公司 | Trace gas measurement apparatus for electrical equipment |
| CN106502286A (en) * | 2016-12-01 | 2017-03-15 | 深圳市深安旭传感技术有限公司 | A kind of hydrogen gas sensor with humidity regulation unit |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2009300243A1 (en) | 2010-04-08 |
| EP2331948A1 (en) | 2011-06-15 |
| JP2012504240A (en) | 2012-02-16 |
| WO2010039345A1 (en) | 2010-04-08 |
| MX2011003355A (en) | 2011-11-18 |
| US8028561B2 (en) | 2011-10-04 |
| EP2331948A4 (en) | 2014-07-02 |
| CA2738869A1 (en) | 2010-04-08 |
| US20100077828A1 (en) | 2010-04-01 |
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